CN116967704B - Automatic circumferential welding device for gas pipeline - Google Patents

Abstract

The invention relates to the technical field of pipeline welding, in particular to a gas pipeline circumferential automatic welding device which comprises two L-shaped frames, a placing unit and a clamping unit which are symmetrically distributed front and back. The angle adjusting component is matched with the limiting rod and the clamping component, so that the angle adjustment can be carried out in a certain range, the clamping operation of two straight pipes under different angle distribution is realized, the two straight pipes are conveniently aligned and abutted against the bent pipe to be welded, the use flexibility of the device is improved, and the use scene of the device is increased; the distance adjusting component is matched with the placing component, the placed bent pipe can be pushed to the fixed straight pipe, and the placing component can carry out self-adaptive adjustment on the bent pipe after the end part of the bent pipe is contacted with the end part of the fixed straight pipe, so that the end part of the bent pipe is clung to the end part of the straight pipe.

Description

Automatic circumferential welding device for gas pipeline

Technical Field

The invention relates to the technical field of pipeline welding, in particular to a gas pipeline circumferential automatic welding device.

Background

The gas pipeline is a special pipeline for conveying combustible gas, has the characteristics of reliable connection, corrosion resistance, no gas blockage, long service life and the like, and is an essential ring for conveying the fuel gas.

Because the gas delivery path is long, in order to satisfy the gas delivery needs, often carry out annular welding to a plurality of gas pipelines in the laying process, annular welding can provide firm reliable connection to ensure that the pipeline does not leak under high pressure and high temperature condition, and when meet when changing the direction of laying in the laying process, still need carry out welded connection processing with two straight pipes and required return bend usually.

When welding a straight pipe and a bent pipe, the existing method generally cleans the surface of the pipe, then moves the bent pipe to the end of the straight pipe through the existing hoisting equipment or a clamp, aligns the straight pipe with the bent pipe in a manual mode, then adopts automatic arc welding or argon arc welding to weld the joint of the straight pipe and the bent pipe, and then lifts up or clamps another straight pipe to weld the joint of the straight pipe and the other end of the bent pipe in an aligned mode.

However, in the method, the pipeline is hoisted by using the hoisting equipment, the stability of the pipeline in the hoisting state is low and the pipeline is easy to deviate, so that the pipeline alignment is easy to influence, the alignment accuracy between the pipelines is reduced, meanwhile, the adopted clamp is flexible, the flexible angle adjustment cannot be performed according to the bending angle of the bent pipe, and the welding flexibility is required to be improved.

Disclosure of Invention

Based on this, it is necessary to provide a gas pipeline circumferential automatic welding device, and the problem that produces when aiming at carrying out the welding to between straight tube and the return bend in prior art is solved.

In order to achieve the above purpose, the present invention is implemented by adopting the following technical scheme: a gas pipeline circumferential automatic welding device, comprising: two L-shaped frames which are symmetrically distributed from front to back.

Placing the unit, install two between the horizontal section of L type frame, place the unit including installing two link between the horizontal section of L type frame, the link is the U type structure of opening towards left, and the vertical section of link is vertical to have seted up the rectangle through-hole, and the rectangle frame is installed through the auxiliary block to the link right-hand member, and the rectangle frame in-connection has the angle modulation part, and the distance adjustment part is installed to the rectangle frame right-hand member, and the distance adjustment part right-hand member is installed and is used for placing the part of placing required welding pipe fitting.

The clamping unit is connected to the connecting frame, the clamping unit comprises a bidirectional threaded rod which penetrates through and is rotationally connected between two transverse sections of the connecting frame, two lifting plates are connected to the bidirectional threaded rod in an up-down symmetrical mode, rectangular strips are installed at the opposite ends of the lifting plates, the rectangular strips are in sliding fit with rectangular through holes, connecting columns are installed at the opposite ends of the lifting plates, the connecting columns are rotationally connected with two clamping parts which are in front-back symmetrical distribution through two auxiliary plates, and limiting rods are connected to the clamping parts which are located on the same side and in an up-down symmetrical distribution in a sliding mode.

According to the embodiment of the invention, the angle adjusting component comprises an angle adjusting screw rod rotatably connected to the left inner wall of the rectangular frame, the right end of the angle adjusting screw rod is fixedly connected with an output shaft of a driving motor, the driving motor is fixedly connected with the right inner wall of the rectangular frame, a moving block is connected to the angle adjusting screw rod in a threaded manner, two connecting rods are symmetrically hinged to the front side and the rear side of the moving block, one end of each connecting rod, which is far away from the moving block, is hinged to a connecting sleeve, and the connecting sleeve is rotatably connected with the middle part of the limiting rod.

According to the embodiment of the invention, the distance adjusting component comprises a sliding rail rod arranged at the right end of the rectangular frame, a sliding sleeve is sleeved at the right end of the sliding rail rod, a moving through hole is formed in the upper end of the sliding sleeve, and a locking screw rod is arranged in the moving through hole and is in threaded connection with the sliding rail rod.

According to the embodiment of the invention, the placing component comprises a placing frame arranged at the right end of the sliding sleeve, the placing frame is of a U-shaped structure with an upward opening, the left side wall and the right side wall of the placing frame are horizontally penetrated and are in sliding connection with two moving rods which are vertically and symmetrically distributed, a clamping block positioned in the placing frame is jointly arranged between the two moving rods positioned at the same side wall of the placing frame, an auxiliary spring is sleeved on the outer surface of the moving rod, and the auxiliary spring is fixedly connected with the outer side surface of the placing frame.

According to the embodiment of the invention, the clamping part comprises a clamping frame fixedly connected to the auxiliary plate, the clamping frame is sleeved on the limiting rod, a semi-annular plate is installed at one end of the clamping frame far away from the connecting column, a plurality of clamping rods which are uniformly distributed circumferentially penetrate through the semi-annular plate and are in sliding connection with the semi-annular plate, a clamping block is installed at one end of the clamping rod close to the center of the semi-annular plate, a force application spring sleeved on the clamping rod is installed between the clamping block and the inner annular surface of the semi-annular plate, an arc-shaped plate is installed at the right end of the semi-annular plate, two semicircular guide rails are installed at the right end of the arc-shaped plate, the two semicircular guide rails are coaxially distributed, the structures of the two semicircular guide rails are identical and only have different sizes, and a driving assembly is installed at one side of the semi-annular plate far away from the clamping frame.

According to the embodiment of the invention, the driving assembly comprises a driving frame arranged on the semi-ring plate, an electric push rod is arranged on the driving frame, a sliding column is horizontally arranged at the pushing end of the electric push rod, the axis of the sliding column is parallel to the axis of the semi-ring plate, a waist-shaped frame is connected to the outer surface of the sliding column in a sliding manner, a sliding plate is hinged to one end of the waist-shaped frame, which is close to the semi-ring plate, and the sliding plate is connected with two adjacent semi-circular guide rails in a sliding manner.

According to an embodiment of the invention, the upper end of the connecting column above is provided with a protractor for measuring angles.

According to the embodiment of the invention, the right end of the clamping block is provided with a notch for welding.

In summary, the present invention includes at least one of the following beneficial technical effects: 1. the angle modulation part that adopts cooperates with gag lever post and clamping part, can carry out the angle modulation in certain limit to this realizes the centre gripping operation to two straight tubes under different angular distributions, and the convenience aligns and offsets tightly with the return bend that needs welded, thereby has improved the flexibility that the device used, has increased the service scenario of device.

2. The distance adjusting component is matched with the placing component, the placed bent pipe can be pushed to the fixed straight pipe, and the placing component can adaptively adjust the bent pipe after the end part of the bent pipe is contacted with the end part of the fixed straight pipe, so that the end part of the bent pipe is clung to the end part of the straight pipe, the alignment accuracy between the bent pipe and the straight pipe is further improved, and the firmness of welding treatment is further improved.

3. The four clamping components are respectively positioned at two sides of the end parts of the two straight pipes, and can be matched with welding equipment simultaneously to synchronously weld the contact parts of the bent pipe and the two straight pipes, so that the efficiency of pipeline welding is improved, and the time required by pipeline welding is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a first perspective three-dimensional structure schematic diagram of a gas pipeline circumferential automatic welding device provided by an embodiment of the invention.

Fig. 2 shows a front view of a gas pipeline circumferential automatic welding device provided according to an embodiment of the invention.

Fig. 3 shows a left side view of the gas pipeline circumferential automatic welding device provided by the embodiment of the invention.

Fig. 4 shows a cross-sectional view in the direction A-A of fig. 3.

Fig. 5 shows an enlarged view of the N region in fig. 4.

Fig. 6 is a schematic cross-sectional view showing the structure of a clamping member of a gas pipeline circumferential automatic welding device according to an embodiment of the present invention.

Wherein the above figures include the following reference numerals: 1. an L-shaped frame; 21. a connecting frame; 211. rectangular through holes; 22. a rectangular frame; 23. an angle adjusting component; 231. angle adjusting screw rods; 232. a driving motor; 233. a moving block; 234. a connecting rod; 235. connecting sleeves; 24. a distance adjusting component; 241. a slide rail rod; 242. a sliding sleeve; 243. a moving through hole; 244. locking the screw rod; 25. placing a component; 251. placing a frame; 252. a moving rod; 253. a clamping block; 254. an auxiliary spring; 3. a clamping unit; 31. a two-way threaded rod; 32. a lifting plate; 33. a rectangular bar; 34. a connecting column; 35. a clamping member; 351. a clamping frame; 352. a semi-annular plate; 353. a clamping rod; 354. a clamping block; 355. a force spring; 356. a semicircular guide rail; 357. a drive assembly; 3571. a drive rack; 3572. an electric push rod; 3573. a sliding column; 3574. a kidney-shaped frame; 3575. a sliding plate; 358. an arc-shaped plate; 36. and a limit rod.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

Referring to fig. 1, a gas pipeline circumferential automatic welding device includes: two L-shaped frames 1 which are symmetrically distributed from front to back.

Referring to fig. 1, fig. 2 and fig. 4, this gas pipeline circumferential automatic welding device still includes places unit 2, place unit 2 installs two between the horizontal section of L type frame 1, place unit 2 including install two link 21 between the horizontal section of L type frame 1, link 21 is the U type structure that the opening was left, the vertical section of link 21 is vertical has offered rectangular through-hole 211, rectangular frame 22 is installed through the auxiliary block to the link 21 right-hand member, be connected with angle modulation part 23 in the rectangular frame 22, distance adjustment part 24 is installed to rectangular frame 22 right-hand member, distance adjustment part 24 right-hand member installs the place part 25 that is used for placing required welded pipe fitting.

Referring to fig. 1 and 2, during specific operation, according to the welding position, the bent pipe with corresponding radian is selected manually, and is horizontally placed in the placement component 25, when the bent pipe is placed, the inner arc faces the angle modulation component 23, the placement component 25 clamps and limits the middle part of the bent pipe, the phenomenon of shaking when the bent pipe is aligned with the straight pipe is avoided, and the bent pipe and the straight pipe are aligned conveniently.

Referring to fig. 1 and 4, the placement unit 25 includes a placement frame 251 mounted at the right end of the distance adjusting unit 24, the placement frame 251 is in a U-shaped structure with an upward opening, two moving rods 252 distributed symmetrically up and down are horizontally penetrated and slidingly connected with the left and right side walls of the placement frame 251, a clamping block 253 located in the placement frame 251 is mounted between the two moving rods 252 located at the same side wall of the placement frame 251, an auxiliary spring 254 is sleeved on the outer surface of the moving rod 252, and the auxiliary spring 254 is fixedly connected with the outer side surface of the placement frame 251.

Referring to fig. 1 and fig. 4, in specific operation, an elbow to be welded is horizontally placed between two clamping blocks 253 in a centered manner, the two clamping blocks 253 are extruded by the elbow to move back to back, the auxiliary spring 254 is stretched, the middle of the elbow is clamped and limited by the clamping blocks 253 under the action of the reaction force of the auxiliary spring 254, and the two clamping blocks 253 can move through four moving rods 252, so that fine adjustment in the alignment process is facilitated.

Referring to fig. 1, fig. 2 and fig. 4, the automatic circumferential welding device for gas pipelines further comprises a clamping unit 3, the clamping unit 3 is connected to the connecting frame 21, the clamping unit 3 comprises a bidirectional threaded rod 31 penetrating through and rotationally connected between two transverse sections of the connecting frame 21, two lifting plates 32 are connected to the bidirectional threaded rod 31 in an up-down symmetrical threaded mode, rectangular strips 33 are installed at opposite ends of the lifting plates 32, the rectangular strips 33 are in sliding fit with rectangular through holes 211, connecting columns 34 are installed at opposite ends of the lifting plates 32, the connecting columns 34 are rotationally connected with two clamping components 35 which are distributed front and back symmetrically through two auxiliary plates, and limiting rods 36 are connected to the two clamping components 35 which are located on the same side and distributed in an up-down symmetrical mode in a common sliding mode.

Referring to fig. 1 and 4, the angle adjusting component 23 includes an angle adjusting screw 231 rotatably connected to the left inner wall of the rectangular frame 22, an output shaft of a driving motor 232 is fixedly connected to the right end of the angle adjusting screw 231, the driving motor 232 is fixedly connected to the right inner wall of the rectangular frame 22, a moving block 233 is screwed onto the angle adjusting screw 231, two connecting rods 234 are symmetrically hinged to the moving block 233, a connecting sleeve 235 is hinged to one end of the connecting rod 234 away from the moving block 233, and the connecting sleeve 235 is rotatably connected with the middle of the limiting rod 36.

Referring to fig. 1 and 4, the upper end of the connecting column 34 positioned above is provided with a protractor for measuring an angle.

Referring to fig. 1,2 and 4, in particular, in an initial state, two clamping members 35 located at the same side and distributed up and down are in a separated state, a rotating handle is installed in the middle of a bidirectional threaded rod 31, a driving motor 232 is started according to the radian of a bent pipe, the driving motor 232 drives an angle adjusting screw 231 to rotate, the angle adjusting screw 231 drives a moving block 233 to slide on the angle adjusting screw 231, meanwhile, the moving block 233 drives two limiting rods 36 to move through two connecting rods 234, so that the distance between the two limiting rods 36 is adjusted, the clamping members 35 synchronously rotate around corresponding connecting posts 34 under the drive of the limiting rods 36 connected with the clamping members 35, so that the included angle between the two clamping members 35 located at the same height is adjusted, the protractor of the upper end of the connecting column 34 is used for determining the degree of an included angle between two clamping components 35 at the same height, so that the accuracy of adjustment is ensured, when the included angle between the two clamping components 35 at the same height is matched with the radian of the bent pipe, the driving motor 232 is closed, the angle adjusting screw 231 limits the moving block 233 through the thread teeth, the moving block 233 limits the four clamping components 35 through the two limiting rods 36, then the moving device is integrally moved to the end part of the installed and positioned straight pipe, the two L-shaped frames 1 are connected with the existing supporting seat, and the supporting seat supports the two L-shaped frames 1, so that the moving positions of the two clamping components 35 are limited, and the moving position of the two clamping components 35 is always ensured to be located at the end part of the straight pipe.

Referring to fig. 1 and 5, the distance adjusting member 24 includes a sliding rail 241 mounted at the right end of the rectangular frame 22, a sliding sleeve 242 sleeved at the right end of the sliding rail 241, a moving through hole 243 provided at the upper end of the sliding sleeve 242, and a locking screw 244 provided in the moving through hole 243, wherein the locking screw 244 is in threaded connection with the sliding rail 241.

Referring to fig. 1, fig. 4 and fig. 5, in specific operation, after two clamping members 35 at corresponding sides move to the end of the straight pipe which is installed and positioned, the placing frame 251 is pushed, the placing frame 251 drives the sliding sleeve 242 to slide on the sliding rail rod 241, meanwhile, the placing frame 251 drives the bent pipe between the two clamping blocks 253 to move towards the direction of the fixed straight pipe through four moving rods 252, protrusions with guiding function are symmetrically arranged on the sliding rail rod 241, the guiding protrusions play a role of guiding and limiting the sliding of the sliding sleeve 242, the locking screw 244 slides in the moving through holes 243, after the end of the bent pipe is contacted with the end of the straight pipe, the placing frame 251 is pushed continuously until the end of the bent pipe is closely attached to the end of the straight pipe, fine adjustment is carried out between the two clamping blocks 253 in the process, the middle of the bent pipe is ensured, thus the alignment accuracy between the bent pipe and the straight pipe is ensured, afterwards, the locking screw 244 is rotated to be in threaded connection with the sliding rail rod 241, the upper end of the locking screw 244 compresses the sliding sleeve 242, and thus limiting the movement of the placing frame 251.

Referring to fig. 3, 4 and 6, the clamping member 35 includes a clamping frame 351 fixedly connected to the auxiliary plate, the clamping frame 351 is sleeved on the limiting rod 36, a semi-circular plate 352 is installed at one end of the clamping frame 351 far away from the connecting column 34, a plurality of clamping rods 353 uniformly distributed circumferentially penetrate through the semi-circular plate 352 and are slidably connected with the semi-circular plate 352, a clamping block 354 is installed at one end of the clamping rod 353 near the center of the semi-circular plate 352, a force application spring 355 sleeved on the clamping rod 353 is installed between the clamping block 354 and the inner annular surface of the semi-circular plate 352, an arc plate 358 is installed at the right end of the semi-circular plate 352, two semi-circular guide rails 356 are installed at the right end of the arc plate 358, the two semi-circular guide rails 356 are coaxially distributed and have the same structure and have different sizes, and a driving assembly 357 is installed at one side of the semi-circular plate 352 far away from the clamping frame 351.

Referring to fig. 3, 4 and 6, in specific operation, after one end of the bent pipe is tightly attached to the end of the fixed straight pipe, the rotating handle in the middle of the bi-directional threaded rod 31 is rotated, the rotating handle drives the bi-directional threaded rod 31 to rotate, the bi-directional threaded rod 31 drives the two lifting plates 32 to approach each other, the two lifting plates 32 drive the two rectangular strips 33 to slide in the rectangular through holes 211, the rectangular strips 33 play a role in guiding the movement of the lifting plates 32, meanwhile, the two lifting plates 32 drive the two clamping frames 351 distributed up and down on the same side to approach each other through the two connecting posts 34, the two clamping frames 351 slide on the limiting rods 36, the two clamping frames 351 approaching each other drive the semi-ring plates 352 connected with each other to approach each other, the semi-ring plates 352 drive the clamping rods 353 connected with each other to move towards the end of the straight pipe, until clamping lever 353 drives clamping piece 354 and straight tube tip contact, then stop rotating two-way threaded rod 31, insert another straight tube that needs welding between two half ring plates 352 of opposite side and hug closely its tip and the other end of return bend, this straight tube's tip is located two half ring plates 352 middle parts at this moment, rethread current supporting equipment carries out horizontal support to this straight tube, continue to rotate two-way threaded rod 31 afterwards, two half ring plates 352 of two same sides are close to each other and hug closely to two-way threaded rod 31 drive, form a complete ring structure, clamping piece 354 can carry out self-adaptation according to the diameter of straight tube under the effect of forcing spring 355, thereby carry out the centre gripping processing to two straight tubes.

Referring to fig. 6, the driving assembly 357 includes a driving frame 3571 mounted on the half-ring plate 352, an electric push rod 3572 is mounted on the driving frame 3571, a sliding column 3573 is horizontally mounted at a pushing end of the electric push rod 3572, an axis of the sliding column 3573 is parallel to an axis of the half-ring plate 352, a kidney-shaped frame 3574 is slidably connected to an outer surface of the sliding column 3573, a sliding plate 3575 is hinged to one end of the kidney-shaped frame 3574, which is close to the half-ring plate 352, and the sliding plate 3575 is slidably connected to two adjacent half-ring guide rails 356.

Referring to fig. 1 and 6, a notch for welding is formed at the right end of the clamping block 354.

Referring to fig. 4 and 6, during concrete work, the rubber pad has been laid to kidney-shaped frame 3574 internal surface, slide plate 3575 is connected with the ball through the round bar rotation, ball and semicircle guide 356 sliding connection, with this reduces the required power of slide plate 3575 along semicircle guide 356 slip half circle through round bar and ball, initially, four slide plate 3575 are connected with four current welding equipment respectively, four slide plate 3575 all are in the tip at corresponding semicircle guide 356, four semicircle plate 352 carry out the centre gripping spacing back to two straight tubes, the soldered connection of welding equipment is located the breach of clamp block 354 this moment, the straight tube also is located the breach of clamp block 354 with the contact site of return bend, afterwards start electric putter 3572, electric putter 3572 promotes the spliced pole 3573 and removes, spliced pole 3573 moves and extrudes kidney-shaped frame 3574 in kidney-shaped frame 3574, the effect of friction force between kidney-shaped frame 3574 and the spliced pole 3573 is played to the rubber pad increase in kidney-shaped frame 3574, kidney-shaped frame 3574 atress drives slide plate 3575 along semicircle guide 356 and drive the tip of semicircle guide 356, thereby two ends the welding equipment is carried out to two and two welded connection parts of two seal-shaped pipe parts are carried out to the split joint with the flat tube, thereby the welding equipment is carried out to two side of two split joint parts of return bend, welding equipment is carried out to two split joint parts and two split joint parts is carried out to the upper side of return bend, welding equipment is carried out to the welding end two split joint parts of two ends of end parts, and upper end welding plate 35 is connected with the flat plate 3575.

The invention is particularly used: s1: according to the welding position, the bent pipe with corresponding radian is manually selected and horizontally placed in the placement component 25, the inner arc faces the angle adjusting component 23 when the bent pipe is placed, and the placement component 25 clamps and limits the middle of the bent pipe.

S2: according to the radian of the bent pipe, the driving motor 232 is started, the driving motor 232 drives the angle adjusting screw 231 to rotate, the angle adjusting screw 231 drives the moving block 233 to slide on the angle adjusting screw 231, meanwhile, the moving block 233 drives the two limiting rods 36 to move through the two connecting rods 234, the distance between the two limiting rods 36 is adjusted, the clamping parts 35 synchronously rotate around the corresponding connecting columns 34 under the driving of the limiting rods 36 connected with the clamping parts, the included angle between the two clamping parts 35 located at the same height is adjusted, the angle gauge at the upper end of the connecting columns 34 is used for determining the degree of the included angle between the two clamping parts 35 at the same height, the adjusting accuracy is ensured, and after the included angle between the two clamping parts 35 at the same height is matched with the radian of the bent pipe, the driving motor 232 is closed.

S3: then the whole moving device moves the two vertically opposite clamping components 35 on the corresponding side to the end part of the straight pipe which is installed and positioned, at this time, the two L-shaped frames 1 are connected with the existing supporting seat, the supporting seat supports the two L-shaped frames 1, so that the moving positions of the two clamping components 35 are limited, the placing frame 251 is pushed, the placing frame 251 drives the sliding sleeve 242 to slide on the sliding rail rod 241, meanwhile, the placing frame 251 drives the bent pipe between the two clamping blocks 253 to move towards the fixed straight pipe through the four moving rods 252, the locking screw 244 slides in the moving through holes 243, after the end part of the bent pipe is contacted with the end part of the straight pipe, the placing frame 251 is continuously pushed until the end part of the bent pipe is tightly attached to the end part of the straight pipe, the locking screw 244 is rotated to be in threaded connection with the sliding rail rod 241, and the upper end of the locking screw 244 compresses the sliding sleeve 242, so that the movement of the placing frame 251 is limited.

S4: rotating the rotating handle in the middle of the bidirectional threaded rod 31, driving the bidirectional threaded rod 31 to rotate, driving the two lifting plates 32 to approach each other by the bidirectional threaded rod 31, driving the two clamping components 35 on the same side to contact the joint of the straight pipe and the bent pipe by the two lifting plates 32, stopping rotating the bidirectional threaded rod 31, inserting another straight pipe to be welded between the two clamping components 35 on the other side and attaching the end of the straight pipe to the other end of the bent pipe, and then continuing to rotate the bidirectional threaded rod 31, wherein the bidirectional threaded rod 31 drives the two clamping components 35 on the same side to approach each other and attach.

S5: the electric push rod 3572 is started, the electric push rod 3572 pushes the sliding column 3573 to move, the sliding column 3573 moves in the kidney-shaped frame 3574 and pushes the kidney-shaped frame 3574, the kidney-shaped frame 3574 is stressed to drive the sliding plates 3575 to slide along the semicircular guide rails 356 and drive welding heads of the welding equipment to weld the contact part, each sliding plate 3575 slides for half circle along the semicircular guide rails 356, so that the contact part of the straight pipe and the bent pipe is welded for half circle, two sliding plates 3575 distributed vertically on the same side drive two welding equipment to carry out complete welding treatment on the joint part of the straight pipe and the bent pipe, after welding is completed, the two lifting plates 32 on the same side are driven to separate through the bidirectional threaded rod 31, and therefore the clamping part 35 is driven to separate from the welded straight pipe and the bent pipe.

In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a plurality of groups" is two or more.

In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

The embodiments of the present invention are all preferred embodiments of the present invention, and are not limited in scope by the present invention, so that all equivalent changes according to the structure, shape and principle of the present invention are covered in the scope of the present invention.

Claims (7)

1. The utility model provides a gas pipeline hoop automatic welder, includes two L type framves (1) of front and back symmetric distribution, its characterized in that:

the placing unit (2) is arranged between the two transverse sections of the L-shaped frames (1), the placing unit (2) comprises a connecting frame (21) arranged between the two transverse sections of the L-shaped frames (1), the connecting frame (21) is of a U-shaped structure with an opening facing left, a rectangular through hole (211) is vertically formed in the vertical section of the connecting frame (21), a rectangular frame (22) is arranged at the right end of the connecting frame (21) through an auxiliary block, an angle adjusting component (23) is connected in the rectangular frame (22), a distance adjusting component (24) is arranged at the right end of the rectangular frame (22), and a placing component (25) for placing required welding pipes is arranged at the right end of the distance adjusting component (24);

The clamping unit (3) is connected to the connecting frame (21), the clamping unit (3) comprises a bidirectional threaded rod (31) which penetrates through and is rotationally connected between two transverse sections of the connecting frame (21), the bidirectional threaded rod (31) is connected with two lifting plates (32) in an up-down symmetrical threaded mode, rectangular strips (33) are installed at opposite ends of the lifting plates (32), the rectangular strips (33) are in sliding fit with the rectangular through holes (211), connecting columns (34) are installed at opposite ends of the lifting plates (32), the connecting columns (34) are rotationally connected with two clamping components (35) which are in front-back symmetrical distribution through two auxiliary plates, and limiting rods (36) are connected to the two clamping components (35) which are located on the same side and are in up-down symmetrical distribution in a common sliding mode;

The angle modulation component (23) comprises an angle modulation screw rod (231) which is rotationally connected with the left inner wall of the rectangular frame (22), the right end of the angle modulation screw rod (231) is fixedly connected with an output shaft of a driving motor (232), the driving motor (232) is fixedly connected with the right inner wall of the rectangular frame (22), a moving block (233) is connected to the angle modulation screw rod (231) in a threaded mode, two connecting rods (234) are symmetrically hinged to the front portion and the rear portion of the moving block (233), one end, far away from the moving block (233), of each connecting rod (234) is hinged to a connecting sleeve (235), and the connecting sleeve (235) is rotationally connected with the middle portion of a limiting rod (36).

2. The gas pipeline circumferential automatic welding device according to claim 1, wherein: the distance adjusting component (24) comprises a sliding rail rod (241) arranged at the right end of the rectangular frame (22), a sliding sleeve (242) is sleeved at the right end of the sliding rail rod (241), a moving through hole (243) is formed in the upper end of the sliding sleeve (242), and a locking screw (244) is arranged in the moving through hole (243) and is in threaded connection with the sliding rail rod (241).

3. The gas pipeline circumferential automatic welding device according to claim 2, wherein: the placing component (25) comprises a placing frame (251) arranged at the right end of the sliding sleeve (242), the placing frame (251) is of a U-shaped structure with an upward opening, the left side wall and the right side wall of the placing frame (251) horizontally penetrate through each other and are connected with two moving rods (252) which are distributed in a vertical symmetrical mode in a sliding mode, clamping blocks (253) arranged in the placing frame (251) are jointly arranged between the two moving rods (252) located on the same side wall of the placing frame (251), auxiliary springs (254) are sleeved on the outer surfaces of the moving rods (252), and the auxiliary springs (254) are fixedly connected with the outer side faces of the placing frame (251).

4. The gas pipeline circumferential automatic welding device according to claim 1, wherein: clamping part (35) are including fixed connection clamping frame (351) on the accessory plate, and clamping frame (351) cover is established on gag lever post (36), half link (352) are installed to one end that spliced pole (34) was kept away from to clamping frame (351), run through on half link (352) and sliding connection have a plurality of circumference evenly distributed's clamping lever (353), clamping block (354) are installed to one end that clamping lever (353) is close to half link (352) center, install between clamping block (354) and half link (352) inner ring face and overlap force application spring (355) of establishing on clamping lever (353), arc (358) are installed to half link (352) right-hand member, and two semicircle guide rails (356) are installed to arc (358) right-hand member, two semicircle guide rails (356) coaxial distribution and two semicircle guide rails (356) are the same only the size is different, and drive assembly (357) are installed to one side that clamping frame (351) was kept away from to half link (352).

5. The automatic circumferential welding device for gas pipelines according to claim 4, wherein: the driving assembly (357) comprises a driving frame (3571) arranged on the semi-annular plate (352), an electric push rod (3572) is arranged on the driving frame (3571), a sliding column (3573) is horizontally arranged at the pushing end of the electric push rod (3572), the axis of the sliding column (3573) is parallel to the axis of the semi-annular plate (352), a waist-shaped frame (3574) is slidably connected to the outer surface of the sliding column (3573), a sliding plate (3575) is hinged to one end, close to the semi-annular plate (352), of the waist-shaped frame (3574), and the sliding plate (3575) is slidably connected with two adjacent semi-annular guide rails (356).

6. The gas pipeline circumferential automatic welding device according to claim 1, wherein: the upper end of the connecting column (34) above is provided with an angle gauge for measuring angles.

7. The automatic circumferential welding device for gas pipelines according to claim 4, wherein: the right end of the clamping block (354) is provided with a notch for welding.